George Dean had already escaped the gallows once, pardoned after a Royal Commission cast doubt on the poisoning case against his wife, Mary. Then a North Shore chemist named Smith came forward, admitting he had sold Dean arsenic and strychnine after Dean claimed he needed a double dose and two poisons to deal with rats on his property.

On 5 October 1895 detectives approached Dean just as he stepped off his ferry at Sydney‘s Circular Quay, still dressed in his captain’s uniform, and arrested him again. “I wonder how many more times I shall be arrested over this affair,” he remarked, before going with the detectives.

Dean subsequently confessed in writing to poisoning his wife. He was convicted of perjury committed to procure his own acquittal and sentenced to fourteen years, while his former lawyer and others faced charges of conspiring to pervert the course of justice.

George Dean lemon syrup case. Prison photograph. Credit: Museums of History NSW, State Archives Collection.
George Dean lemon syrup case. Prison photograph. Credit: Museums of History NSW, State Archives Collection.

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Harold Shipman was a trusted family doctor in Hyde, England, who killed his patients with lethal injections of diamorphine and then falsified their medical records to make the deaths look natural. He often urged grieving families toward cremation, quietly destroying the evidence a post-mortem might have found.

What he did not understand was his own surgery computer. The practice software secretly time stamped every entry, and when investigators compared those hidden timestamps to the dates on his altered files, the lie was obvious: he had been rewriting patient histories after his victims were already dead. He went on trial in 1999 charged with just 15 murders, though he is believed to have killed close to 250 patients over more than two decades, making him Britain’s most prolific serial killer.

Shipman never confessed and maintained his innocence throughout the trial. He was convicted on all counts and later took his own life in prison.

A Serial Killers Computer Log tracked everything.
A Serial Killers Computer Log tracked everything.

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In Montreal in October 1970, armed members of the Front de Liberation du Quebec forced their way into the home of British trade commissioner James Cross and seized him at gunpoint, demanding the release of jailed militants in exchange for his life.

The kidnapping tipped Quebec into what became known as the October Crisis. Days later a second cell abducted and killed a provincial cabinet minister, and the federal government responded by invoking the War Measures Act, suspending civil liberties and deploying troops onto Canadian streets for the first time in peacetime history. Cross himself was held for weeks before his captors negotiated safe passage to Cuba in return for his release.

Riders on horseback wear red uniforms and carry flags as they participate in the Calgary Stampede Parade. The event showcases a vibrant display of local pride and community spirit. 07. 2023 - Calgary, Canada. | ID 460635341 © Kukotaekaterina | Dreamstime.com
ID 460635341 © Kukotaekaterina | Dreamstime.com

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Henry Howard ran the Frankston Hotel, near Melbourne, in partnership with widowed licensee Elizabeth Wright. When she hired a barman named Thomas Harman to keep an eye on the books, Howard convinced himself the pair were lovers, though Harman had a wife of his own and, as the judge later noted, there was no evidence of any affair. On the night the hotel’s contents were sold off, Howard stabbed Wright to death with a freshly sharpened butcher’s knife, then killed Harman as he ran to her screams.

He was found sitting calmly beside Wright’s body with the bloody knife at his feet, and when told Harman had also died, witnesses said he smiled. Arrested on the spot, he told police only, “Prove it.” At his trial his single explanation was, “I come from a race that will not take an insult, even if it brings them to the gallows.” He was hanged at Melbourne Gaol on 4 October 1875, the hangman’s badly set noose leaving him convulsing for several minutes before he died.

On the scaffold he confessed to murdering Wright but insisted he had never meant to kill Harman.

Butcher knife on cutting table close-up
Butcher knife on cutting table close-up

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